Wiseco Pistons 573M06600 Pro-Lite ATV Piston Kit Standard Bore - 2-Stroke 66mm

The Wiseco 573M06600 Pro-Lite piston kit is a high-performance replacement designed for 2-stroke ATV applications requiring a standard 66.00mm bore. Built from decades of experience, this Pro-Lite forged piston delivers great value, reliability, and performance for all-purpose 2-stroke riding.

Key Features:

• Forged from aerospace-grade aluminum using a proprietary forging process that compresses material molecules, increasing density and aligning grain flow for superior impact resistance and fatigue strength
• High silicon, low expansion aluminum alloy construction provides superior strength, reduced weight, improved heat transfer, and longer service life
• Extra lightening operations enhance throttle response while dedicated forging design optimizes strength-to-weight ratio
• Tight tolerances ensure quiet running and consistent performance
• CNC machined with optimal cam shape and profile for peak horsepower and extended service life

Complete Kit Includes:

• One forged piston, one high-performance ring set, one alloy wrist pin, and two circlips
• Top-end bearings, gaskets, and cylinder sleeves sold separately

This standard bore piston measures 66.0mm bore diameter and is designed for 57mm stroke applications. Wiseco manufactures all pistons in-house at their U.S. facility, forging their own pistons and producing their own forge tooling domestically.